The Keithley System41 RF/Microwave Signal Routing Mainframe (Model 7001) is a 2-slot mainframe for automated RF and microwave signal switching and routing. It delivers flexible matrix and multiplexer expansion through four 3-pole analog backplane rows (Hi, Lo, Guard) and supports complex test configurations with battery-backed storage for up to 100 switch patterns. Break-before-make switching ensures signal integrity, while four trigger sources—external TTL, IEEE-488 bus, front-panel Trigger Link, and internal timer—enable precise timing control from 1 ms to 99999.999 seconds in 1 ms increments. Channel Ready status output provides relay settling confirmation via TTL pulse.
Technical Specifications
• Card Slots: 2 plug-in positions per mainframe
• Switch Pattern Memory: 100 patterns (battery-backed)
• Switch Setting Time: 0 to 99999.999 seconds, 1 ms increments (manually configurable; automatic selection by card type)
• Relay Drive Capacity: 700 mA maximum (both slots combined)
• Analog Backplane Isolation: >10¹⁰ Ω, <50 pF (path-to-path, path-to-chassis)
• Maximum Backplane Voltage: 250 V DC, 250 V RMS, 350 V AC peak
• Maximum Backplane Current: 1 A peak
• Channel Crosstalk: <−65 dB @ 1 MHz (50 Ω load)
• Bandwidth (Analog): <3 dB loss at 100 MHz (50 Ω load)
• Trigger Sources: External (TTL, 600 ns minimum pulse), IEEE-488 (GET, *TRG), Trigger Link, Internal Timer (1 ms to 99999.999 seconds)
• Status Output: Channel Ready (TTL-compatible, 10 µs typical low-going pulse, rear BNC)
• Digital I/O: 4 open-collector outputs (30 V max pull-up, 100 mA sink), 1 TTL input, 1 common input
• Power: 100–240 V RMS, 50/60 Hz, 50 VA maximum
• Dimensions: 89 mm (H) × 216 mm (W)
– Key Features
• Switching sequence: automatic break-before-make
• EMI/RFI compliance: VDE 0871B, FCC Class B
• EMC: EN61326-1, EU Directive 89/336/EEC
• Safety: EN61010-1, EU Directive 73/23/EEC
• IEEE-488 and Trigger Link interfaces (8-pin micro-DIN connectors)
• External Trigger and Channel Ready BNC connectors
– Typical Applications
Telecommunications, aerospace, and defense automated test systems requiring high-isolation signal routing and matrix expansion.
